Hydrogeology for engineers fall, '18 table 2: hydraulic conductivity measured at four wells well id hydraulic conductivity s-04 s-06 s-09 s-10 2.1 1.1 0.8 2.0 roblem 3. if you look at temporal data (time-series), you will find that from may/june (snowmelt) until early september (baseflow) the water table drops 0.6 ft. a) using your knowledge of specific yield (sy), how much water would have been lost from the floodplain aquifer during this time period? use the map to determine an average rectangular area for the floodplain region you contoured use a specific yield of around 25% (a reasonable value taken from table 3.5 in the text book) o o if the porosity (n) of the aquifer is 28% (a good average value taken from table 3.4), what is the specific retention (sr)? how much water was retained in the aquifer (only in the 1 ft section where it experienced drawdown from june to october)? b) lem 4. assume that monitoring well s-12 had a conservative dye injected into it. how long d it take for the dye to reach downstream wells? big hint: the groundwater flow velocity is pecific discharge divided by the aquifer porosity (v q/n). we'll talk about why later.